I have been looking into different scopes for long range shooting. I it seems I've heard alot about the leupold on this site. For long range deer hunting I was thinking about the 6x18x40mm varix-2? But what I need help with is all the different vari x modles they have. For the money is the long range modles that better because they have side foucus, and 30mm tube. Are those 2 options worth the extra 300$ over the vari x2 Thanks for any help on this matter.